Spring structure



Dec. 8, M. R. MANGAN SPRING STRUCTURE Filed March 12, 1925 Patented Dec.8, 1925.

PATENT OFFICE.

MICHAEL R. MANGAN, OF CHICAGO, ILLINOIS.

SPRING STRUCTURE.

Application filed. March 12, 1923.

To all whom it may concern:

Be it known that I, lVlronAnn R. MANGAN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Spring Structures, ofwhich the following is a description.

My invention relates to an improvement in a spring structure andparticularly to such a structure adapted for use for beds,

chairs, seats, and the like.

One of the objects of my invention is to provide means forinterconnecting the adjacent relatively movable elements of the springstructure so as to permit a certain amount of pivotal vertical movementtherebetween and a slight amount of lateral pivotal movement, butprevent any separation of the parts.

Other objects of my invention are to provide a device of the kinddescribed, which is simple, neat, compact, economical, durable,reliable, efiicient and satisfactory for use wherever found applicable.

Many other objects and advantages of the construction herein shown anddescribed will be obvious to those skilled in the art from thedisclosures herein given.

To this end my invention consists in the novel construction, arrangementand combination of parts herein shown and described, and moreparticularly pointed out in the claims.

In the drawings, wherein like reference characters indicate like orcorreponding parts:

Fig. 1 is a top plan view of a portion of a spring structure embodyingmy invention;

Fig. 2 is a section taken substantially on line 22 of Fig. 1;

Fig. 3 is an enlarged fragmentary detail;

Fig. 4 is a section taken substantially on line 4 of Fig. 1;

Fig. 5 is a section taken substantially on line 5-5 of Fig. 8.

In the drawings, wherein I have illustrated the preferred embodiment ofmy invention, there is shown a spring structure made up of a pluralityof series of spring coil supporting elements, or links 1, and from whichcoil springs 2 may be carried either separate therefrom or integraltherewith as shown, the coil parts being secured to the link parts inany suitable manner, as

Serial No. 624,425.

by clips 3. The general shape of the spring structure is defined by arim frame, which is not shown, and to which the links 1 closest theretomay be connectedin any suitable manner. Each of the link is made of asingle piece of material, such as wire, bent to the form desired, and inthe form shown each link is generally circular on its top portion andhas, a pair of substantially parallel arms a lying in the same plane asthe main top body portion thereof but extending radially outwardlytherefrom. The ends of said arms 4c are connected by an integral portionextending transversely thereof and offset horizontally downwardlytherefrom, as at 5 (see Figs. 2, l and 5), so that a recess 6 is formedat the end of the offset portion of the link. Diametrically oppositethis recess 6 each link is formed with another recess 7, also downwardlyoffset from the main body portion of the link, the recess 7 being oflesser depth and width than the recess 6 so that when the adjacent linksare positioned as shown in the drawings, the smaller offset bend '7 maynest or seat within the larger offset bend 6 but be free ofinterconnection therewith.

In order to interconnect the parts of the spring structure so that itmay support a mattress, or any other load, I have provided tie rods 8,each extending transversely across the adjacent links of the pluralityof series of links and connected thereto without the use of anyextraneous devices or attachments whatsoever, whereby a strong anddurable interconnection results and in which the cost is greatly reducednot only in the labor involved but in the amount and cost of thematerials used At regular intervals along the length of each of the tierods 8 there are formed hori- Zontally offset portions, each having areduced neck portion 9 and an elongated and enlarged head 10 at theouter ends of said neck portions, as shown more clearly in Figs. 1 and3. All of the parts of the tie rods lie in the same plane and the neckportion is of such size that it will seat within the smaller recess 7 ofthe links, with the head portion 10 underlying the arms 4 of one link,as shown more clearly in Figs. 1. and 3, and the main body portions ofthe tie rods 8 underlying the portions of the adjacent link most closelyadjacent its smaller recess '7'.

The links are assembled by placing the smaller irecesscd offset ,7ofone,link within the larger recessed portion 6 of the adjacent link,said links being free of interconnection. Then the tie rod 8 is sointerlocked with both of said adjacent links that its neck portion seatswithin the uppermost recess 7, the head portion and the main bodyportion of the tierod arranged at opposite sides of said neck portionand underlying andengaging the adjacent portions of the respective linksof'the pair of links.

The links when thus connected may pivot vertically as will. be clearfrom the. section shown in Fig. 5, and there will be'more or less-playin a horizontal plane, depending upon the distance between the-headportion 10 and the main body portion of the connectingor tie rods 8. Thelinks are absolutely locked against separation, however, and all of thishas been done without the use of clips, or.otherextraneons devices. Theends of the tie .rods 8 may be connected to the rim frame, not shown,-by any suitable means.

Havingthus described myinventiomit obvious that various immaterialmodifications may be made in the same without def parting. from thespirit of my invention;

hence I do not wish.v to be understood as limiting myself to the exactform, construction, arrangement and combination of parts herein shownand described or uses mentioned.

What I claim as new and desire to secure by Letters Patent is 1; Aspring structure comprising adjacent links, each havingdownwardly:extending offsets at diametrically@opposed ends; there-1 of,onset said otisetiportionsbeing otlesser width and depth than:the-other, and a tie rod. interconnected with the .-adjacentlinks whensaidlinks-are arrangedwith the small-.

er offset portionofone within the larger. .oif- 1 set. portion, of theother so as to prevent, separation of said .links but permit their 1vertical pivoting movement.

2. A spring structure.comprisinga plurality of'links, each link having apainof diametrically opposed downwardly extending offsets, one ofsaidofisets being of lesser depth and width than the other so that whenthe upper sides of saidlinks are arranged in the same plane end to end,the smaller ofl set portion may nest in thelarger offset por tion, and atierod having ofl'set portions interconnected with the nested offsets ofthe links to prevent separation thereat.

3. A spring structure comprising a plu rality of-parallelseries oflinks, eaeh link having a pair of diametrically opposed, -clownwardlyextending ofi'sets t'herein, one

of said offsets being of. lesser depth and.

width than the other otfset .so,- th at when, the linksare arrangedzwiththeirtops inthe same plane end to end the smaller otlset willseat-inithe larger, and a tie rod extending transversely across saidseries of links and interconnected between the adjacent links of eachseries, said tie rod having all of its portions lying in the same planeand having an o'll'set neck-portion to lie within the smaller offset ofone of said adjacent links.

and having a head portion at the end of said neck portion, and thenceextending in opposite directions below said links transversely ofsa-idneck portion.

a. A spri-ngstructure comprising adjacent links free of interconnection,each having a pair of downwardly ofiset bent portions therein, one bentportion being of lesser depth and width than the other so that when apair of links are arranged end to end with their tops inthe samev plane,the smaller bent portion may seat in the larger bent portion, and a tierod extending transversely across said links with all of its portionslying in the same plane and having a neck portion arranged intermediatethe adjacent bent portions of both. of said links therebelow andinterconnected to both of said links thereat so that the tops of saidlinks will lie substantially in the same. plane.

A spring structure comprisinga plurality of series of links, theadjacent links oi: each series being free of interconnection and eachhaving a pair of diametri zally opposed downwardly extendingoiisetportions, oneof said offset portions being of lesser depth and widththanthe' other so that it may seat in the ,largeroitset portion of anadjacent link andpermit pivotal movement vertically therebetween, and atie. rod, having, all of its portions lying substantially in thesaneplane with.ofisetsi'ormed at intervals th ejalong, said offsets beingintegral with the tie rod and each comprising a neck and. an enlargedhead portion, the head portion of. whichis adapted to lie below one ofsaid links in engagement therewith, the neck portionadapted to seat inthe smaller of said pair of olij'sets of the links, and the main portionof the tie rod adapted to lie below the main body portion of said links.

(3. A spring structure comprising a plurality of. parallel series oflinks, each link having a substantially circular portion with a pair of.parallel spaced arms offset radially outwardly therefrom and lying inthe same plane therewith and a downwardly extend ing coil spring, theouter ends of said arms connected by an integral horizontally oil'setportion, each of said links also having a smaller, horizontal portiondiametrically opposite thefirst mentioneddownwardly oil'- setportiOIySOthat said smaller offset portion otone link may seat withinthe largerofiset portion of the adjacent link, and a tie rod made of a singlepiece of material, all portions of which-.lie in the same plane and withhorizontal offsets at intervals therealong, each offset comprising areduced neck portion and an enlarged head portion, whereby the neckportion may be seated Within the smaller offset of one of said adjoininglinks and the head portion and the main body portion arranged onopposite v the smaller offset portion of the other link.

In testimony whereof, I have hereunto signed my name.

MICHAEL R. MANGAN.

